Decorin Binding by DbpA and B of Borrelia garinii, Borrelia afzelii, and Borrelia burgdorferi Sensu Stricto
: Salo J, Loimaranta V, Lahdenne P, Viljanen MK, Hytonen J
Publisher: OXFORD UNIV PRESS INC
: 2011
: Journal of Infectious Diseases
: JOURNAL OF INFECTIOUS DISEASES
: J INFECT DIS
: 1
: 204
: 1
: 65
: 73
: 9
: 0022-1899
DOI: https://doi.org/10.1093/infdis/jir207(external)
Background. Decorin adherence is crucial in the pathogenesis of Lyme borreliosis. Decorin-binding proteins
(Dbp) A and B are the adhesins that mediate this interaction. DbpA and B of Borrelia garinii, Borrelia afzelii, and
Borrelia burgdorferi sensu stricto (ss) differ in their amino acid sequence, but little attention has been paid to the
potential difference in their decorin binding.
Methods. We expressed recombinant DbpA and DbpB of B. garinii, B. afzelii, and B. burgdorferi ss and studied
their binding to decorin. We also generated recombinant Borrelia strains to study the role of DbpA and DbpB in the
adhesion of live spirochetes to decorin and decorin-expressing cells.
Results. Recombinant DbpA of B. garinii and DbpB of B. garinii and B. burgdorferi ss showed strong binding to
decorin, whereas DbpA of B. burgdorferi ss and both DbpA and DbpB of B. afzelii exhibited no or only minor
binding activity. DbpA and DbpB of B. garinii and B. burgdorferi ss also supported the adhesion of whole spirochetes
to decorin and decorin-expressing cells, whereas DbpA and DbpB of B. afzelii did not exhibit this activity.
Conclusions. Dbp A and B of B. garinii and B. burgdorferi ss mediate the interaction between the spirochete and
decorin, whereas the same adhesins of B. afzelii show only negligible activity.